John,
You're in the right ballpark, but I'm not quite as patient, ...the travel time is only 50 seconds. I plan on using a 7.5 Hp motor. The conservation of energy approach is certainly valid (although, I can't say I thought of working it out that way), but the majority of that energy...
Johnhanging, thx, I'll take a look
Speedy, thx,
Yes the elevator will have two independent clamping systems, which will clamp the track, similar to a table saw kickback. The weight of the cart will clamp it tighter. The clamps will engage if the cable tension drops below about 800 lbs. I...
Alterson, thx.
as per item 1, done
Item 2, done
Item 3 Agreed, I would rather base the SF on the working or allowable loading of the components. I know that for elevator applications the SF tends to be considerably higher, since it is for people. I plan to use a SF of 10 to 15 for the cable...
I’m currently designing and building a powered elevator / lift for my cottage. In recent years, the 130-stair climb up from the lake is getting challenging for my ageing parents. The lift will consist of a track at about a 32 deg. angle with a winch at the top to pull a car up and down. The car...
I'm not sure what RWJ's application is, but for an industrial steriliser, the cobalt source is typically contained in a large shielded room (6’ thick concrete walls). The source is stored in a 25' deep pool. The emergency stop is for when the source is in the storage position and personnel are...
One other point to be aware of is that switch failure can also be caused by oxidisation of the switch contacts. This is caused by the high ozone (O-3) content in the air. The ozone is of course a by-product of irradiating the air.
This sounds like an industrial gamma sterilisation application. This is a common challenge with production irradiators. There isn't very much that will survive in that environment, given that most switches have some plastic in them. Look for switches with Bakelite parts. It will hold up...
